3D Joint inversion of gravity and gravity tensor data

ZHAO Simin; GAO Xiuhe; QIAO Zhongkun; JIANG Dandan; ZHOU Fei; LIN Song

doi:10.3969/j.issn.1673-9736.2018.01.06

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Global Geology ›› 2018, Vol. 21 ›› Issue (1) : 55-61. DOI: 10.3969/j.issn.1673-9736.2018.01.06

Articles

3D Joint inversion of gravity and gravity tensor data

ZHAO Simin¹, GAO Xiuhe¹, QIAO Zhongkun², JIANG Dandan¹, ZHOU Fei¹, LIN Song¹

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Abstract

The processing and interpretation of gravity and gradient data plays an important role in geophysics. The cross gradient joint inversion is usually used for achieving structure coupling of multiple geophysical models. In order to realize the coupling of gravity and gravity tensor data, the authors analyzed each component. The results show that different types of data contain different direction information, and derived the joint inversion based on cross gradient function and applied it to model data. The theoretical model results show that the cross gradient method can reduce the multi solution and significantly improve the resolution of the inversion. The method was also applied to inverse the gravity tensor data in Vinton salt dome, showing that this method can get higher resolution results than the separate linear inversion, and be closer to the real density from drilling data.

Key words

cross gradient / joint inversion / gravity data / gradient data

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ZHAO Simin, GAO Xiuhe, QIAO Zhongkun, JIANG Dandan, ZHOU Fei, LIN Song. 3D Joint inversion of gravity and gravity tensor data[J]. Global Geology. 2018, 21(1): 55-61 https://doi.org/10.3969/j.issn.1673-9736.2018.01.06

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Funding

Supported by Project of National Key Research and Development Plan (No.2017YFC0601606, 2017YFC0602203), National Science and Technology Major Project (No.2016ZX05027-002-03), National Natural Science Foundation of China (No.41604098, 41404089) and State Key Program of National Natural Science of China (No.41430322).